UG Model Analysis Position of teeth

Position of the teeth

The position of teeth can be described in three planes of space

·      A-P plane  - whether the teeth are proclined,retroclined or normally inclined (Fig 5,6)

FIG 5 : Occlusal view of retroclined teeth  (Upper right central and lateral incisor)

FIG 6 :  Lateral View of proclined incisor (upper left lateral) and retroclined incisors (the remaining incisors)

Vertical plane - whether the teeth are Supraerupted or infraerupted. (Fig 7, Fig 8)

FIG 7: Infraerupted second bicuspid

FIG 8 : Supraerupted lower incisors, lower left canine may be considered as infraerupted

Transverse plane- Whether the posterior teeth are buccally placed or palatally placed. 

(Fig 9)

FIG 9 : Occlusal view showing buccally placed lower right first bicuspid and labially placed lower right central incisor and lingually placed lower left incisors

Whether any  teeth are rotated .i.e. mesiopalatal/distobuccal or mesiolingual/ distopalatal rotations (Fig 10)

FIG 10 : Mesiolingually/Distolabially rotated lower central incisors (Mesial is lingual)/Distal is labial)

Angulation of the anteriors  i.e mesially tipped or distally tipped also need to be mentioned in the transverse plane. (Fig 11)

FIG 11 : Mesially tipped central incisors.